Immediately after landing at Washington's Dulles airport, an Acura representative handed me the keys to a 2014 TSX with fewer than 180 miles on its clock. The four-cylinder engine started and I pointed its signature beak towards a destination in Middleburg, VA. It was a curious move by the Japanese automaker, especially considering that I had flown no less than 2,300 miles to drive the discontinued vehicle's ostensible successor, the all-new 2015 Acura TLX.